IDY10220 SECURITE High Seas Forecast for Western METAREA 10 12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 1100 UTC 17 November 2025 Part 1 Warnings Refer to latest warnings for details of the area affected. Melbourne Gale Warning 5. Melbourne Gale Warning 8. Melbourne Gale Warning 9. Part 2 Situation at 170600 UTC Low [1] 1005hPa near 26S110E. Forecast low [1] 1006hPa near 26S108E at 181200UTC. Trough 30S087E 37S091E 41S097E. Forecast trough 40S092E 44S096E 47S100E at 181200UTC. Forecast cold front approaching area from west near 40S092E 44S096E 47S100E at 171200UTC, then near 40S078E 50S084E at 180000UTC. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. East of line 25S105E 31S105E 35S111E: Southeasterly quarter winds turning clockwise within 120nm of low [1]. Wind speeds 20/30 knots. Rough seas. Low to moderate swell. West of line 33S088E 46S102E: Southeasterly quarter winds west of trough, shifting northerly quarter east of trough. Wind speeds 20/30 knots within 240nm of low [2] and trough, decreasing below 25 knots elsewhere. Moderate to rough seas. Moderate swell. South of line 40S129E 49S091E 35S080E, outside warning areas: Westerly quarter winds 25/33 knots, shifting northwesterly quarter within 360nm east of cold front. Rough to very rough seas. Moderate to heavy swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell, increasing to moderate to heavy south of line 46S093E 39S129E. Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of front, trough. Heavy at times within 60nm of trough. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 20:00 UTC Monday.